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Gravity and expanding Earth
Language
English
Status
Published
Peer review journal
No
Title of the book
Issue/vol(year)
2002
Publisher
GNGTS-CNR
Pages (printed)
1-11
Issued date
November 7, 2003
Abstract
The analysis of different clues indicating a variation of the local gravity (g) through
geological time is performed. The examined data come from Astrogeodesy (PM and TPW),
Paleogeography, Tidal torques, J2 variation, and paleogravity data from Geology. It is shown that a
joint reasoning about all these data can constrain the possible variation rate of G, g and M (Earth’s
mass). The result is that, albeit in the past great theoretical and experimental efforts were made in
proposing and searching for G time-decreasing, a major role could be played by an increase of M. The
present analysis converges toward an upper limit of the Earth’s mass variation
in the order of magnitude
of (dM/dt)/M = 10 exp(−9)/yr.
geological time is performed. The examined data come from Astrogeodesy (PM and TPW),
Paleogeography, Tidal torques, J2 variation, and paleogravity data from Geology. It is shown that a
joint reasoning about all these data can constrain the possible variation rate of G, g and M (Earth’s
mass). The result is that, albeit in the past great theoretical and experimental efforts were made in
proposing and searching for G time-decreasing, a major role could be played by an increase of M. The
present analysis converges toward an upper limit of the Earth’s mass variation
in the order of magnitude
of (dM/dt)/M = 10 exp(−9)/yr.
Type
article
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Gravity ed espansione GNGTS 21 2002.pdf
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